package com.wbs.util;


import lombok.extern.slf4j.Slf4j;
import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.map.DeserializationConfig;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.SerializationConfig;
import org.codehaus.jackson.map.annotate.JsonSerialize;
import org.codehaus.jackson.map.ser.impl.SimpleFilterProvider;
import org.codehaus.jackson.type.TypeReference;

import java.io.IOException;

@Slf4j
public class JsonMapper {
    private static ObjectMapper objectMapper = new ObjectMapper();

    static {
        // config 排除一些为空的字段等等

        objectMapper.disable(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES);
        objectMapper.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);
        objectMapper.setFilters(new SimpleFilterProvider().setFailOnUnknownId(false));
        objectMapper.setSerializationInclusion(JsonSerialize.Inclusion.NON_EMPTY);
    }

    // 将对象转换成字符串
    public static <T> String obj2String(T src) {
        if (src == null) {
            return null;
        }
        try {
            return src instanceof String ? (String) src : objectMapper.writeValueAsString(src);
        } catch (Exception e) {
            log.warn("my config in parse object to String exception,error:{}", e);
            return null;
        }
    }


    // 将String转换成obj
    public static <T> T string2Object(String src, TypeReference<T> tTypeReference) {
        if (src == null || tTypeReference == null) {
            return null;
        }
        try {
            return (T) (tTypeReference.getType().equals(String.class) ? src : objectMapper.readValue(src, tTypeReference));
        } catch (Exception e) {
            log.warn("my config in parse String to object exception,String:{},TypeReference:{},error:{}", src, tTypeReference.getType(), e);
            return null;
        }
    }
}
